Refrigeration unit



Oct. 18, 1932.

D. sTANYo REFRIGERATINGUNIT Filed out. 19, 1928 2 Sheets-Sheet l INVENToR.

ATTORNEY` D. STANYO REFRIGERATING UNIT Oct. 18, 1932.

Filed Oct. 19, 1928 2 Sheets-Sheet 2 Patented Oct. 18, 1932 UNITED sTATEs PATENT OFFICE DESIDER` STANYO, OF MILWAUKEE, WISCONSIN, `ASSIGNOR TO THE VILTER MANU- FACTURING COMPANY, OF MILWAUKEE, WISCONSIN, A CORPORATION WISCONSIN REFRIGERA'TION UNIT Application filed October 19, 1928. Serial No. 313,488.

This inventionreates to improvements in `refriger-ating units.

by the fact that the rooms varied in dimensions, and each cooling unit had to be specially fitted to the space in which it was to be used. Furthermore, the coil lofts, which have heretofore been used, rendered the units cumbersome to handle and install, and increased the expense connectedtherewith.

It is one of the objects of the presentinvention to provide improved refrigerating units which are compact in form, and which l sizes ready to air circulation is employed to obtain a higher heat transfer between the ammoniaand the surrounding air, and in which a smaller coil area 1s necessary. 1

Itis a further and important object of this invention to providea refrigerating unit in which the refrigerant is introduced into the liquid header at a point remote from the point of greatest suction, thereby equalizing the flow of the refrigerant through the\coils. If the refrigerant were introduced at the point of greatest suction, practically all of the refrigerant would pass .through the coils at this end of the header, and the rest of the coils would be rendered ineffective for cooling purposes.

It is a further objectof this invention to provide a refrigerating unit which is simple in construction, eliicient in operation, and well adapted for the purpose described.

'With the above and other objects in view, the invention consists of the improved refrigerating unit, and 'all its parts and combinations as set forth in the claims, and all equivalents thereof.

In the accompanying drawings, in which the same reference characters designate the `same parts in all of the views:

Fig. 1 is a plan view of the improved unit, part being broken away; Fig. 2 is a side elevation thereof;

Fig. 3 is an end view;

Fig. 1 is a view ofthe opposite end to that shown in Fig. 3;

Fig. 5 is adetail view of the suction header, parts being broken away;

Fig. 6 is al detail View of the liquid header,

'parts beingbroken away; and

Fig. 7 is a. similar view showing a modified form of liquid header.

'Referring to the drawings, the numeral 10 designates an outer casing, which is preferably cubical in shape, and which is formed with an open end 11, and with a circular opening 12 in the other end.

Within the casing are coils 13 which are preferably loop-shaped as shown. The coils, however, may be of any other desired form, and either a single coil unit or a plurality maybe employed according to the size of the refrigerating unit. A suction header 14, in the upper portion of the casing, has the upper ends of each of the coils 13 connected thereto as at 15. The said suctio header has an opening 16 at one end which 1s adapted to be connected by suitable piping to` the compressor (not shown). The point of greatest suction is in the portion of the header ad'- jacent the opening 16. p

In the lower portion of the casing is a liquid header 17, which has the lower ends of the coils connected thereto as at 18. The liquid header is formed with an opening 19 for connection with piping-leading to the compressor.' Extending from said opening within the headerand terminating near the other end is a nipple 20 having an open end 21. The said nipple conducts the refrigerant to the end of the header remote from the point of greatest suction, and at this point the ammonia is discharged. Due to the fact -that the coils at this end of thc header are adjacent the open end 21 of the nipple, a quanl header at 'a point remote from the point of greatest suction, the distribution of the refrigerant'V through the coils is equalized, and

all of the coils will be equally effective for cooling purposes.

In Fig. 7 a modified form of liquid header is shown, in which the refrigerant is admitted directly into the header at the point remote from the point of greatest suction by the opening 19. This eliminates the necessity of employing the nipple 20 shown in the principal form, but produces exactly the same effect.Y

Mounted ona support 22, at the end of the unit having the circular opening 12, is an electr-ic motor 23. The said motor hasa drive shaft 24 `extending therefrom upon which a fan 25 is rigidly mounted. The said fan ts within the opening-12 in the end of the casing, and is adapted to force air over the coils to obtain a higher heat transfer between the ammonia and the surrounding air.

In using the device, either a single cooling unitmay be employed, or a plurality of units may be inter-connected. If itis desired to use the` device for Ventilating as well as for cooling purposes, a large pipe may be connected to the circular opening 12, the said pipe leading to the exterior of the building. The fan may thenbe arranged to draw fresh air in from outside, and this air will be cooled and circulated throughout the room. A similar pipeinay also be connected tothe other end of the unit if it is desired to conduct the cooled air to a remote point.

It has been found that these units are Well adapted forI use in institutions requiring small installations as they are compact and inexpensive to install.- The' units are particularly useful in shops where it is desired to keep the rooms c ool so that garments will not be injured by perspiration when being tried on by customers.

f From the foregoing description, it may be seen that the improved cooling unit is simple in construction, efficientin operation and well ladapted for the purpose described.

What I claim is: l

1. A refrigerating unit comprising a casing having air inlet and outlet "openings therein, a pair of headers spaced apart in said casing, refrigerant receiving means eX- tending between and having end portions connected to said headers, and a fan for drawing in air through said 'inlet opening and for circulating the same around said refrigerant receiving means to the outlet opening.

2. A refrigerating unit comprising a casing having air intake and outlet openings, a

suction header having a suction opening in one end mounted in the upper portion of said casing, a liquid header mounted in the lower portion of said casing, coils extending between and having their end portions connected to said headers, -means for admitting a refrigerant to said liquid header at a point opposite from the suction opening in the suction header to equalize the distribution of .the refrigerant through the coils, and a motor-driven fan mounted adjacent the air intake opening in the casing for circulating air around the coils.

3. A refrigerating unit comprising a casing having air intake and outlet openings, a. suction header having a suction opening in a liquid header mounted in another portion of the casing, refrigerant receiving means extending between and having end portions connected tolsaid headers, means for admitting a'refrigerant to said liquid header at a point opposite from the suction opening in the suction header to equalize the distribution of the refrigerant through .the refrigerant receiving means, and a motor driven fan mounted adjacent the air intake opening in the casing for circulating air around the refrigerant receiving means.

4. A refrigerating unit comprising a casing having air inlet and outlet openings in opposite end portions thereof, a pair of headersspaced apart in said casing, looped coils extending between and having their end portions connected to said headers, and means for causing a circulation of air from said inlet around the coils and through said opposed outlet.

5.v A refrigerating unit comprising a casing having air inlet and outlet openings in opposite end portions thereof, a pair of headers spaced apart in said casing, refrigerant receiving means extending between and having end portions connected t'o said headers, and means for-causing a circulation of air from said inlet agound the refrigerant receiving means and through said opposed -outlet.

In testimony whereof, I affix my signature.

DESIDER STANYO.

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